Thermal expansion of CeCu5.8Ag0.2

Küchler, R.; Gegenwart, P.; Heuser, K.; Scheidt, E.-W.; Stewart, G. R.; Steglich, F.

doi:10.1016/j.physb.2004.12.054

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Thermal expansion of CeCu_5.8Ag_0.2

Küchler, R., Gegenwart, P., Heuser, K., Scheidt, E.-W., Stewart, G. R., & Steglich, F. (2005). Thermal expansion of CeCu_5.8Ag_0.2. Physica B-Condensed Matter, 359-361, 53-55. doi:10.1016/j.physb.2004.12.054.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0015-2CE9-5 Version Permalink: https://hdl.handle.net/21.11116/0000-0000-3535-9

Genre: Journal Article

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Creators:
Küchler, R.¹, Author
Gegenwart, P.¹, Author
Heuser, K.², Author
Scheidt, E.-W.², Author
Stewart, G. R.², Author
Steglich, F.³, Author

Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462
2External Organizations, ou_persistent22
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467

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Abstract: We present low-temperature thermal expansion measurements on the heavy fermion system CeCu5.8Ag0.2CeCu5.8Ag0.2, which is located at an antiferromagnetic (AF) quantum critical point (QCP). At zero magnetic field, the volume expansion coefficient divided by temperature shows a logarithmic divergence upon cooling below 1 K. This temperature dependence is incompatible with the predictions of the itinerant spin-density wave theory for an AF QCP. The application of magnetic fields leads to a cross-over to Landau Fermi liquid behavior as expected for a zero-field QCP.

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Language(s): eng - English

Dates: Date issued: 2005-04-30

Publication Status: Issued

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Identifiers: eDoc: 242000
DOI: 10.1016/j.physb.2004.12.054

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Title: Physica B-Condensed Matter

Other : Physica B

Source Genre: Journal

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Publ. Info: Amsterdam : North-Holland

Pages: - Volume / Issue: 359-361 Sequence Number: - Start / End Page: 53 - 55 Identifier: ISSN: 0921-4526
CoNE: https://pure.mpg.de/cone/journals/resource/954928575733